A guy is a registered sex offender due to molesting my daughter (his step-sister at the time)when she was a minor. Recently his real sister has told that he did the same to her. Both girls say that this went on over a 7 year period. Both are in their early 20's now, so I am wondering if anything will be done to the offender regarding what he did to his sister. He is registed in SC and is off parole for the offense against my daughter.

How long ago did the last abuse happen to his real sister?

If the SOL has not ran out, she can go to the authorities to press charges.

This happened 6 years ago.